Como se hacen oraciones en pasado simple afirmativas?

En la oración afirmativa el verbo cambia para todos los sujetos.

Leonor spoke English very well.

They studied in the college

I phoned my mom every afternoon

En la oración negativa debe usar did no seguido del verbo sin cambios :

Leonor did not speak English very well.

They did not study in the college.

I did not phone my mom every afternoon

En la oración interrogativa se empieza por el auxiliar did, seguido del sujeto y del verbo sin cambios

Did Leonor speak English very well?

Yes, she did

Did they study in the college?

No, they didn't

Did you phone your mom every afternoon?

Yes, I did.